Casing for measuring-pumps.



A. J. POCOCK.

CASING FOR MEASURING PUMPS.

AFPLICATIOH HLED NOV. 15, I916.

Patented Aug. 13, 1918.

2 SHEETS-SHEET I.

igl 36' 35 I LI H A. J. POCOCK.

CASING FOR MEASURING PUMPS.

APPLICATION FILED NOV. Is. 1916.

2 SHEETS-SHEET 2- Patented Aug. 13, 1918.

Wil a/woo AUGUSTINE J. rocoox, or'nnv'ron, oHIo.

CASING non MEASURING-PUMPS.

Specification of Letters Patent.

Patented Aug. 13, 1918.

Application filed November 15, 1916; Serial No. 131,367.

To all whom it may concern Be itknown that I, AUGUSTINE J. Poooox, acitizen of the United States, residing at Dayton, in the county ofMontgomery and State of Ohio, have invented certain new and usefulImprovements in Casings for Measuring-Pumps; and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,

and to the letters and figures of reference marked thereon, which form apart of this specification.

My invention relates to certain new and useful improvements in measuringpumps of the type especially adapted for measuring gasolene although anyliquid may be meas-. ured thereby with equal facility. The improvements,more specifically speaking, relate to convenient means for'incasing theop erating mechanism of the pump so that 1t may not be tampered withwhen not in use.

I With the above objects in view, reference is made to the accompanyingdrawings which illustrate a single-cylinder measuring pump of whichFigure 1 is an elevation of the'pump with the movable inclosing case inposition to conceal the driving mechanism thereof; Fig. 2 is a verticalelevation similar to Fig. 1 showing the pump casing, both the stationaryand movable parts, in section; Fig. 3 is a similar elevation at a rightangle to Fig. 2; Fig. '4: is a cross-sectional view on the line 4. et ofFig. 2; Fig. 5 is a detail view of the handle oroperating crank; Fig. 6is a view of the handle or operating crank at a right angle to Fig. 5;and Fig. 7 is a detail sectional view of one of the springcontrolledwinding devices by means of which the movable casing is controlled withrespect to its position.

In the specification and drawings, simllar reference characters indicatecorresponding parts.

Referring in particular to the various features in connection with theaccompanying drawings, 1 designates the pump cylinder having the usualsuction inlet 2 through which the oil is drawn in to be dischargedtherefrom through the operation of the rack 8 which connects with thepiston 4'. The.

pump cylinder 1 terminates at its upper end in a chambered head 5 fromwhich pipes 6 and? extend. Between the head 5 and the pipe 7, which isthe discharge pipe, a cylinder 8 is interposed in which any of the wellknown forms of strainer may be placed for the oil passing out of thecylinder through the pipe 7. The pipes 6 and 7 form a support for thegear casing 9 within which the usual driving gear is mounted whichoperates the piston rack 3 up and down in a well known manner. The pumpcylinder is inclosed by a stationary casing 10' which extends above thecylinder head 5 and the upper diameter of which is enlarged as at 11' tocotiperate with a slidable casing 12 which incloses the operatingmechanism of the pump when not in use and thereby prevents tamperingtherewith at such time.

The casing 12 consists of a cylinder of a suitable diameter to slidedown over the lower casing and which rests upon the base of thelower'stationary casing 10 when in the lowered position, as shown indotted lines in Fig. 2. The upper structure of the pump is provided witha cap 13 which is rigidly secured to thepipes 6 and 7 and is of asuitable diameter to receive the upper end of the slidable casing 12when the latter is elevated to the inclosing position. A suitable numberof rods 14 extend between the head 5 of the cylinder and the cap 13 toprovide guides for the movement of the slidable cylinder or casing, saidrods being so positioned as to not interfere with the operative parts ofthe pump. Guide projections 15 project from the upper inner side of theslidable casing 12 and through these projections the guide rods 14;pass. The casing in its movements is guided over the lower portion ofthe cylinder 10 and to the upper position as shown in Fig. 2. Supports16 on the interior of the cap 13 provide suitable supports for the upperends of the guide rods 14. Secured to these supports 16 are housings 17which inclose winding spools 18 on the interior of which arearrangedclock or convolute springs 19. In

which is afiixed at 21 to the inner side of a spool 18'. The outer sideof each of the cylh.

inders 18 receives a winding tape which is adapted to be wound andunwound thereon according to the influence of the spring on the interiorof the spool. The tape 22 passes out of the housing 17 through anopening 23 therein, as shown in Fig. 7, and the ends of said tapes sopassing out are secured to the guide projections 15, before referred to.In the drawings, I have shown three sets of winding tapes arranged atsuitable points and it will be seen that when the slidable casing 12 islowered the winding tape 22 will be withdrawn from the spools 18 and thesprings 19 on the interior of said spools will contract in a well knownmanner or wind up on the shafts 20. The positions of the tape-windingdevices, it will be observed, are closely adj aeent to the guide rods 14so that when the slidable casing 12 is lowered the unwound tape 22 willlie adjacent to said rods and parallel therewith and be entirely out ofthe way of the operating mechanisms of the pump. In a manner that isreadily understood when the slidable casing 12 is lowered it will remainin its lowered position until elevated by the hands and when elevatedthe winding devices will have the effect of holding said casing in theelevated position. Means are provided for locking the casing 12 in itsele vated position so that it may not be moved by unauthorized persons.Convenient and simple means for this purpose consists of a loop or hasp36 which is pivoted to the upper end of the casing 12 at 37 and whenelevated upon its hinge it receives a staple 38 secured to an adjacentpart of the pump cap 13. The staple 38 receives the hasp of a padlock 39and the said casing is thus locked from any manipulation when elevated.

The driving gear within the gear casing 9 is operated from the pumphandle or crank 24. This gearing is of well known form and constitutesno feature of the present means, therefore, its illustration has beenomitted. It is driven from the crank handle 2l which operates a shaft 25journaled in the sides of the gear casing 9. The upper end of said crankhandle 2% terminates in a yoke or fork 26, best shown in Figs. 5 and 6.This fork portion of the crank handle is pivoted at 27 to a collar 28which is loose on the shaft 25 and the said crank handle may be shiftedon its pivot to the inward position shown in Fig. 3, in which case it isconfined Within the slidable casing 12, or it may beshifted outwardly toan operating position, as shown in Fig. 5, when the slidable casing 12is lowered. Adjacent to the pivot end of said lover, a toothed wheel 29is placed, the same being rigidly secured to the shaft in any suitablemanner. In the drawings, Fig. I have shown the wheel 29 provided with acollar, 30 which receives a pin 31 which secures it to the shaft Anoperating pawl 32 is pivoted at to the crank 24: immediately below thetoothed wheel 29. \Vhen the crank handle 21 is shifted outwardly to itsoperative position, the pawl 82 engages the toothed wheel 29 and an opeation of the crank at such time will rotate the shaft 25 and set thegear in the gear casing 9 in op eration to lower or raise the piston.rod 41 through the rack 3. thrown partially from its working positiontoward its inward position, the pawl 32 rises out of the notches of thedriving wheel 29 and, the part 35 of the pawl being two wide to entersaid notches, the crank may be turned either way from an upper positionto the lower one without operating the pump. In such operation the broadpart of the pawl rides over the teeth of said wheel. In this way thecrank 24 may be swung-from an upper position to a lower position, as inFig. 3, and then pushed inwardly to permit the casing 12 to inclose it.A coil spring 34 is attached tothe inner end of the pawl 32 and to asuitable point on the operating crank 24:. The effect of this spring isto maintain the pawl 32 in its operative position. The outer end of thepawl is spread or widened at 35 to prevent that portion of the pawl fromentering between the teeth of wheel 29 when the crank 24' is thrown toits inward position.

Having described my invention, I claim.

1. In a pump of the type specified, the combination with a lowerstationary casing inclosing the lower portion of a pump structure, and acap mounted upon the upper portion of said pump structure, of a slidableeasing adapted to in'close the upper portion of the pump structure andto telescope over the lower casing when lowered, verticalguide rodsmounted on the upper portion of the pump structure, guide projectionssecured to the upper portion of the slidable casing and cooperating withsaid guide rods in the movements of said slidable casing, and a seriesof spring-controlled tape-connections mounted on said cap and connectedto the slidablc casing whereby said casing is maintained in its elevatedposition wit-h its upper end within the circumference of said cap andmay be lowered against the tensionof said tape connections,substantially as specified.

2. In a measuring pump, the combination of a lower stationary casinginclosing the pump cylinder, a stationary cap mounted upon the upperportion of the pump structure, a slidable case adapted to inclose theupper portion of the pump structure be tween the stationary casing andthe cap and to thus form a continuation of the stationary casing whenelevated, a series of guides arranged between the lower stationarycasing and the cap and the movable casing relVhen the'crank 2%isspectively for centering the movement of In testimony whereof I aifixmy signasaid movable casing, housings on the inte ture, in presence oftwo Witnesses.

rior of said cap, windable springs mounted 1 a in said housings, andband connections be- AUGUSTINE POLOCK' 5 tween said springs and theupper portion of WVitnesses:

the slidable casing, substantially as speei- MELLIE GALLowAY,

fied. MATTHEW SEIBLER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

7 Washington, D. O.

